Distinguish between ammeter and voltmeter and how do you connect them into circuit?
Answers
Answer:
an ammetre is measuring device used to measure the electric current in a circuit. a voltmeter is connected in parallel with a device to measure its voltage while an ammeter is connected in series with a device to measure its current.
Answer:
The major difference between the ammeter and the voltmeter is that the ammeter measures the flow of current, whereas the voltmeter measures the emf or voltage across any two points of the electrical circuit. The other differences between the ammeter and voltmeter are presented below in the comparison chart.
Electricity is measured in two ways. i.e., either through current or voltage. The current and voltage of the circuit are measured through ammeter and voltmeter. The working principle of the ammeter and voltmeter are same as that of the galvanometer.
The galvanometer uses a coil which is placed between the magnet. When the current flows through the coils, it becomes deflected. The deflection of the coils depends on the charge passing through it. This deflection is used for measuring the current or voltage. The galvanometer works as a voltmeter when the resistor is placed in series with the galvanometer.
Content: Ammeter Vs Voltmeter
Comparison Chart
Basis For Comparison Ammeter Voltmeter
Definition of Ammeter
The ammeter is the measuring instruments which are used to measure the current in the circuit. It measures the small amount of current in milliamperes or micro-amperes. The ammeter is placed in series with the measuring circuit so that the whole current of the circuit passes through it.
The resistance of the ammeter is very small as compared voltmeter. For ideal ammeter, the value of resistance is equal to zero. The small resistance does not obstruct the flow of current, and thus the ammeter measures the true value.
Definition of Voltmeter
The voltmeter is the voltage measuring devices. It is connected in parallel with the electrical circuit whose potential is to be measured. The connection polarity of the voltmeter is same as that of the ammeter i.e. the positive terminal is connected to the positive polarity of the supply and the negative potential is connected to the negative polarity.
The resistance across the voltmeter is very large as compared to the ammeter. This resistance does not allow the current to flow through the voltmeter and thus the exact value of the voltage across the measuring point is measured. The value of resistance in ideal voltmeter is approximately equal to infinity.
Key Differences between Ammeter and Voltmeter
The following are the key difference between Ammeter and Voltmeter.
Nowadays, the current clamp is used for measuring the circuit current.
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